package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.annotaion.SystemControllerLog;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import com.itheima.utils.DateUtils;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 报表操作
 */
@RestController
@RequestMapping("/report")
public class ReportController {
    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;

    //会员数量折线图数据
    @RequestMapping("/getMemberReportByMonth")
    @PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
    @SystemControllerLog(MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL)
    public Result getMemberReportByMonth(@RequestBody Map data) throws ParseException {// yyyy-MM
        // 获取参数
        String startDateStr = (String) data.get("startDate");
        String endDateStr = (String) data.get("endDate");

        // Exception test
        if ("2020-12".equals(endDateStr)) {
            int i = 1 / 0;
        }

        // 参数转为Date类型
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
        Date startDate = null;
        Date endDate = null;
        if (startDateStr != null) {
            startDate = sdf.parse(startDateStr);
        }
        if (endDateStr != null) {
            endDate = sdf.parse(endDateStr);
        }
        Map<String,Object> map = new HashMap<>();
        List<String> months = new ArrayList<String>();

        //获得日历对象，模拟时间就是当前时间
        Calendar end = Calendar.getInstance();
        if (endDate != null) {
            end.setTime(endDate);
        }
        int month;
        if (startDate == null) {
            // 默认查询前12个月
            month = 12;
        } else {
            // 计算要查询多少个月的数据
            Calendar start = Calendar.getInstance();
            start.setTime(startDate);
            int m = end.get(Calendar.MONTH) - start.get(Calendar.MONTH);
            int y = end.get(Calendar.YEAR) - start.get(Calendar.YEAR);
            month = Math.abs(m + y * 12) + 1;
        }

        //计算过去一年的12个月
        end.add(Calendar.MONTH,-month);//获得当前时间往前推12个月的时间
        for(int i=0;i<month;i++){
            end.add(Calendar.MONTH,1);//获得当前时间往后推一个月日期
            Date date = end.getTime();
            months.add(new SimpleDateFormat("yyyy.MM").format(date));
        }
        map.put("months",months);
        List<Integer> memberCount = memberService.findMemberCountByMonths(months);
        map.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
    }

    //会员数量饼形图数据（性别）
    @RequestMapping("/getMemberReportBySex")
    @PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
    @SystemControllerLog(MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL)
    public Result getMemberReportBySex(){
        Map<String,Object> map = new HashMap<>();
        List<String> sexNames = new ArrayList<String>();
        sexNames.add("男");
        sexNames.add("女");
        sexNames.add("未知");
        List<Integer> memberCountBySex = memberService.findMemberCountBySex();
        List<Map<String,Object>> memberCount = new ArrayList<Map<String,Object>>();
        for (int i = 0; i < memberCountBySex.size(); i++) {
            Map<String,Object> data = new HashMap<>();
            data.put("name", sexNames.get(i));
            data.put("value", memberCountBySex.get(i));
            memberCount.add(data);
        }
        map.put("sexNames",sexNames);
        map.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
    }

    //会员数量饼形图数据（年龄）
    @RequestMapping("/getMemberReportByAge")
    @PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
    @SystemControllerLog(MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL)
    public Result getMemberReportByAge(){
        Map<String,Object> map = new HashMap<>();
        List<String> ageNames = new ArrayList<String>();
        ageNames.add("0-18");
        ageNames.add("18-30");
        ageNames.add("30-45");
        ageNames.add("45以上");
        ageNames.add("未知");
        List<Integer> ages = new ArrayList<>();
        ages.add(18);
        ages.add(30);
        ages.add(45);
        List<Integer> memberCountByAge = memberService.findMemberCountByAge(ages);
        List<Map<String,Object>> memberCount = new ArrayList<Map<String,Object>>();
        for (int i = 0; i < memberCountByAge.size(); i++) {
            Map<String,Object> data = new HashMap<>();
            data.put("name", ageNames.get(i));
            data.put("value", memberCountByAge.get(i));
            memberCount.add(data);
        }
        map.put("ageNames",ageNames);
        map.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
    }

    //套餐预约占比饼形图
    @RequestMapping("/getSetmealReport")
    @PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
    @SystemControllerLog(MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL)
    public Result getSetmealReport(){
        //使用模拟数据测试使用什么样的java对象转为饼形图所需的json数据格式
        Map<String,Object> data = new HashMap<>();

        /*List<String> setmealNames = new ArrayList<>();
        setmealNames.add("体检套餐");
        setmealNames.add("孕前检查套餐");
        data.put("setmealNames",setmealNames);*/
        List<Map<String,Object>> setmealCount = setmealService.findSetmealCount();
        data.put("setmealCount",setmealCount);

        List<String> setmealNames = new ArrayList<>();
        for (Map<String, Object> map : setmealCount) {
            String name = (String) map.get("name");//套餐名称
            setmealNames.add(name);
        }
        data.put("setmealNames",setmealNames);
        return new Result(true,MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,data);
    }

    @Reference
    private ReportService reportService;

    //运营数据统计
    @RequestMapping("/getBusinessReportData")
    @PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
    @SystemControllerLog(MessageConstant.GET_BUSINESS_REPORT_FAIL)
    public Result getBusinessReportData() throws Exception {
        Map<String,Object> data = reportService.getBusinessReportData();
        return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,data);
    }

    //导出运营数据
    @RequestMapping("/exportBusinessReport")
    @PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
    @SystemControllerLog(MessageConstant.GET_BUSINESS_REPORT_FAIL)
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response) throws Exception {
        Map<String,Object> result = reportService.getBusinessReportData();
        //取出返回结果数据，准备将报表数据写入到Excel文件中
        String reportDate = (String) result.get("reportDate");
        Integer todayNewMember = (Integer) result.get("todayNewMember");
        Integer totalMember = (Integer) result.get("totalMember");
        Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
        Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
        Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
        Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
        Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
        Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
        Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
        Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
        List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

        String filePath = request.getSession().getServletContext().getRealPath("template")+ File.separator+"report_template.xlsx";
        //基于提供的Excel模板文件在内存中创建一个Excel表格对象
        XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(new File(filePath)));
        //读取第一个工作表
        XSSFSheet sheet = excel.getSheetAt(0);

        XSSFRow row = sheet.getRow(2);
        row.getCell(5).setCellValue(reportDate);//日期

        row = sheet.getRow(4);
        row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
        row.getCell(7).setCellValue(totalMember);//总会员数

        row = sheet.getRow(5);
        row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
        row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

        row = sheet.getRow(7);
        row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
        row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

        row = sheet.getRow(8);
        row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
        row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

        row = sheet.getRow(9);
        row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
        row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

        int rowNum = 12;
        for(Map map : hotSetmeal){//热门套餐
            String name = (String) map.get("name");
            Long setmeal_count = (Long) map.get("setmeal_count");
            BigDecimal proportion = (BigDecimal) map.get("proportion");
            row = sheet.getRow(rowNum ++);
            row.getCell(4).setCellValue(name);//套餐名称
            row.getCell(5).setCellValue(setmeal_count);//预约数量
            row.getCell(6).setCellValue(proportion.doubleValue());//占比
        }

        //使用输出流进行表格下载,基于浏览器作为客户端下载
        OutputStream out = response.getOutputStream();
        response.setContentType("application/vnd.ms-excel");//代表的是Excel文件类型
        response.setHeader("content-Disposition", "attachment;filename=report.xlsx");//指定以附件形式进行下载
        excel.write(out);

        out.flush();
        out.close();
        excel.close();
        return null;
    }
}
